CN104253348B - Plug and use the electric coupler component of this plug - Google Patents

Abstract

The invention relates to the field of electrical connectors, in particular to a plug and an electrical connector assembly using the plug. The plug takes the front end as the insertion end, which includes a plug housing and a connecting nut. The plug housing is also covered with a ferrule. Corrugated springs are installed between the pressure-bearing part, the rear end and the plug housing that are pressure-fitted with the adapter socket, and the inner wall surface of the connecting nut is provided with escape grooves and key grooves one after the other. The ring groove of the coaxial line of the plug housing, the convex key on the ferrule is located in the avoidance groove, the keyway corresponds to the convex key on the ferrule and its front end extends to the avoidance groove, and the outer peripheral surface of the plug housing is provided with The three-curved groove on the ferrule corresponds to the staple, and the staple is located at the rear end of the three-curved groove and cooperates with the front and rear limit of the connecting nut. The plug combines the bayonet structure of a circular bayonet connector with a circular threaded electrical connector and provides a snap-in feel.

Description

Plug and electrical connector assembly using the plug

technical field

The invention relates to the field of electrical connectors, in particular to a plug and an electrical connector assembly using the plug.

Background technique

With the modular development of electrical equipment such as communications, electrical connector components have been widely used in various industries. The board socket and the corresponding plug, which are often seen in daily life, are one of the simplest electrical connector components.

In some special occasions, it is required that the electrical connector assembly not only has the function of making and breaking the circuit, but also has the characteristics of sealing, anti-vibration, and anti-loosening. Among them, the circular threaded connector assembly represented by GJB599 is a kind of electrical connector assembly with the above characteristics. The circular thread electrical connector assembly is composed of a plug and a socket. The plug includes a cylindrical plug housing. The plug housing is rotatably equipped with a connecting nut. Connecting direction) to prevent disengagement, the socket includes a socket housing, and the socket housing is provided with external threads corresponding to the internal threads of the connecting nut. When the plug and the socket are mated, through the connecting nut and the socket housing Cooperate to lock the two. In order to avoid the mutual rotation of the plug housing and the socket housing during the mating process, a positioning key is provided on the outer peripheral surface of the plug housing, and a positioning key is provided on the inner peripheral surface of the socket housing. The keyway corresponding to the positioning key; in order to realize the sealing of the plug and the socket at the mating position, the plug shell is often equipped with an interface seal ring that matches the front face of the socket shell; in order to realize the anti-vibration loosening between the plug and the socket , There is also a corrugated spring between the connecting nut and the plug housing, relying on the pressure provided by the corrugated spring for the connecting nut to prevent the connecting nut from automatically turning back; in order to indicate whether the plug and the socket are plugged in place, the socket housing There is a marking ribbon. When the connecting nut covers the ribbon, it means that the plug and socket have been plugged in place. The threaded electrical connector assembly has the advantages of small connection torque, strong vibration resistance, and strong impact capability. However, when the plug and socket are mated in place, it is only indicated by the matching of the ribbon and the connecting nut, which has certain uncertainties. In addition, The corrugated spring begins to deform under pressure when the connecting nut starts to rotate, which not only increases the torque required to rotate the connecting nut to a certain extent, but also easily causes damage to the corrugated spring. In addition, the threaded connection also makes the The mating and unmating speed of the plug and socket is limited.

In view of the above defects of the circular threaded connector assembly, a circular bayonet connector appeared on the market, the circular bayonet connector, the difference between the circular bayonet connector and the circular threaded connector is only that the socket shell The threaded groove on the body is changed to a three-curved groove with a large pitch and a staple socket, and the internal thread on the connecting nut is replaced with a staple. Firstly, due to the large pitch of the three-curved groove, the plug and the socket can be inserted and separated quickly. In addition, when the plug and the socket are mated in place, the staple retreats into the staple socket to produce a feeling of being in place. However, the increase of the three-curved groove relative to the pitch of the thread leads to a decrease in the anti-vibration and impact resistance of the circular bayonet connector, and the retraction of the staple into the staple socket will cause a gap between the plug and the socket. The interface seal fails.

From the above description, it can be seen that if the bayonet structure of the circular bayonet connector can be combined with the circular threaded electrical connector, the circular threaded electrical connector will certainly be able to have a feel in place.

Contents of the invention

The object of the present invention is to provide a plug that combines the bayonet structure of the circular bayonet connector with the circular threaded electrical connector and has a feeling of being in place.

Meanwhile, the object of the present invention is to provide an electrical connector assembly using the above-mentioned plug.

In order to solve the above problems, the plug adopts the following technical solutions: plug, the plug uses the front end as the insertion end, and it includes a plug housing and a connecting nut. The plug housing is also covered with a sleeve, and the sleeve is provided with a convex key and The three-curved groove that penetrates the sleeve wall has a pressure-bearing part used to press fit with the adapter socket at the front end, and a corrugated spring is installed on the top between the rear end and the plug housing, and a front end on the inner wall surface of the connecting nut The first one is provided with an avoidance groove and a keyway, the avoidance groove is an annular groove coaxial with the plug housing, the convex key on the ferrule is located in the avoidance groove, the keyway corresponds to the convex key on the ferrule and its front end extends As far as the avoidance groove, the outer peripheral surface of the plug housing is provided with a staple corresponding to the three-curved groove on the ferrule, and the staple is located at the rear end of the three-curved groove and cooperates with the front and rear limit of the connecting nut.

The rear end of the three-curved groove is an opening structure, and the staple is located in the opening structure of the corresponding three-curved groove.

A gasket is arranged at the rear end of the ferrule on the plug housing, and the gasket blocks the opening at the rear end of the three-curved groove.

The staples extend into the avoidance grooves of the connecting nuts and cooperate with the connecting nuts in the front and rear limit positions.

The electrical connector assembly adopts the following technical scheme: the electrical connector assembly includes a plug and a socket, the plug includes a plug housing and a connecting nut, the socket includes a socket housing, and the socket housing is provided with external threads corresponding to the connecting nut. The plug housing is also covered with a ferrule, and the ferrule is provided with a convex key and a three-curved groove penetrating through the wall of the ferrule. The front end has a pressure-bearing part for matching with the adapter socket, and the rear end is connected with the plug shell. The top is equipped with a corrugated spring, and the inner wall surface of the connecting nut is provided with avoidance grooves and key grooves one after the other. The avoidance grooves are ring grooves coaxial with the plug housing, and the convex keys on the ferrule are located In the groove, the keyway corresponds to the convex key on the ferrule and its front end extends to the avoidance groove. The outer peripheral surface of the plug housing is provided with a staple corresponding to the three-curved groove on the ferrule, and the staple is located at the back of the three-curve groove. end and cooperate with the front and rear limit of the connecting nut.

The rear end of the three-curved groove is an opening structure, and the staple is located in the opening structure of the corresponding three-curved groove.

A gasket is arranged at the rear end of the ferrule on the plug housing, and the gasket blocks the opening at the rear end of the three-curved groove.

There is a sealing section at the front end of the plug housing, and a peripheral sealing ring for sealingly cooperating with the outer peripheral surface of the sealing section is provided in the socket housing.

The staples extend into the avoidance grooves of the connecting nuts and cooperate with the connecting nuts in the front and rear limit positions.

In the process of using the plug, when it needs to be mated with the adapted socket, firstly turn the connecting nut to connect it with the adapted socket, and before the pressure-bearing part of the ferrule contacts the adapted socket, the ferrule The convex key is always located in the avoidance groove of the connecting nut due to the action of the corrugated spring. At this time, the connecting nut rotates idly relative to the ferrule and promotes the plug and the adapter socket to be gradually mated. When the pressure-bearing part of the ferrule contacts the adapter socket Finally, when the connecting nut is further rotated, the ferrule will start to move backward through the cooperation between its convex key and the keyway of the connecting nut under the action of the adapter socket and rotate with the connecting nut. At this time, the plug housing The staple on the clamp starts to rotate relative to the ferrule. When the plug and the adapter socket are inserted into place, the ferrule retreats and the staple falls into its retainer socket to send out a signal in place. It can be seen that the plug combines the bayonet structure of the circular bayonet connector with the circular threaded electrical connector and can provide a feeling of being in place.

Furthermore, after the rear end of the three-curved groove is set as an open structure, it can facilitate the assembly of the ferrule; the gasket is to be able to cooperate with the corrugated spring to reduce the rotational resistance between the ferrule and the corrugated spring; to make the staple By protruding into the escape groove of the connecting nut and cooperating with the front and rear limit of the connecting nut, the structure of the plug can be simplified to the greatest extent, and the processing difficulty thereof can be reduced.

Description of drawings

Fig. 1 is a structural schematic diagram of a plug;

Figure 2 is an exploded view of the plug;

Fig. 3 is a schematic structural view of the ferrule in Fig. 2;

Fig. 4 is a schematic structural view of the plug housing in Fig. 2;

Fig. 5 is a schematic diagram of cooperation between the plug housing, ferrule and corrugated spring;

Fig. 6 is the structural representation of connecting nut;

Figure 7 is a diagram of the use state of the plug (initial state);

Figure 8 is a diagram of the use state of the plug (mating state);

Fig. 9 is a schematic diagram of the position of the plug housing, the ferrule and the connecting nut in the initial state;

Figure 10 is a schematic diagram of the positions of the plug housing, ferrule and connecting nut when the plug is mated with the adapter socket;

Fig. 11 is a schematic structural diagram of an electrical connector assembly.

detailed description

The embodiment of the plug is shown in FIGS. 1-10 , the plug has a front end as a plug-in end, and includes a plug housing 11 and a connecting nut 12 .

The plug housing 11 is roughly in the shape of a stepped sleeve, which includes a small-diameter section at the front end and a large-diameter section at the rear end. There is a sealing section at the front end of the small-diameter section. 14 cooperates to realize the interface seal between the two, and the outer peripheral surface of the small diameter section is provided with a positioning key 15 at the rear end of the sealing section, and the positioning key 15 is used for anti-rotation cooperation with the housing of the adapter socket 13. The front end of the large-diameter section of the plug housing 11 is provided with a staple 16 protruding radially toward the periphery, and the rear end of the large-diameter section is provided with a rear-facing stepped surface.

The connecting nut 12 is also in the shape of a stepped sleeve with a small front and a large rear, which includes a small diameter section at the front end and a large diameter section at the rear end. The small diameter section of the connection nut 12 has an internal thread, and the outer peripheral surface of the large diameter section A knurling structure is provided. In addition, an avoidance groove 17 and a keyway 18 are also provided on the inner peripheral surface of the large-diameter section of the connecting nut 12. The avoidance groove 17 is an annular groove coaxial with the connecting nut 12, and the keyway 18 is along the front and rear. direction and its front end extends into the escape groove 17. In this embodiment, a retaining spring 19 is also provided at the rear end of the inner wall of the connecting nut 12, and a stepped gasket 20 is provided in front of the retaining spring 19, and the stepped gasket 20 is set on the plug housing 11 and is connected with the plug housing. On the body 11, the stepped surface facing the rear stops and fits, so that the connecting nut 12 cannot fall off from the front end of the plug housing 11, and the staple 16 of the plug housing 11 is located in the escape groove 17, so that the connecting nut 12 cannot fall off from the front end of the plug housing 11. 12 can idle on the plug housing 11.

The plug housing 11 is also covered with a ferrule 21, the ferrule 21 is located between the connecting nut 12 and the plug housing 11, and its front end is provided with a pressure-bearing part for press-fitting with the adapter socket 13, and the rear end is connected to the plug A corrugated spring 22 is installed on the top between the shells 11. In this embodiment, the pressure-bearing part is formed by the inturned edge at the front end of the ferrule 21. The corrugated spring 22 is set on the plug shell and is located between the staple and the step washer. There are gaskets on the left and right sides respectively. In addition, the ferrule 21 is also provided with a three-curved groove 23 corresponding to the staple 16. The three-curve groove 23 runs through the sleeve wall of the ferrule 21 and has an open structure at the rear end, and the staple 16 is located in the opening structure of the corresponding three-curve groove. Middle; the outer peripheral surface of the ferrule 21 is provided with a convex key 24, the convex key 24 corresponds to the keyway 18 in the connecting nut 12, in the initial state, the convex key 24 extends into the escape groove of the connecting nut 12, so that The connecting nut 12 is capable of idling relative to the ferrule.

When the plug needs to be mated with the adapter socket, first turn the connecting nut to connect it with the adapter socket. Before the pressure-bearing part of the ferrule contacts the adapter socket, the convex key of the ferrule is due to the action of the corrugated spring It has been located in the avoidance groove of the connecting nut. At this time, the connecting nut is idling relative to the ferrule and the plug is gradually inserted into the adapter socket. When the pressure-bearing part of the ferrule is in contact with the adapter socket, the connecting nut is further rotated. , the ferrule will start to move backward through the cooperation between its convex key and the keyway of the connecting nut under the action of the adapter socket and rotate with the connecting nut. The ferrule rotates, and when the plug and the adapter socket are plugged in place, the ferrule retreats and makes the staple fall into the staple socket to send out a signal in place.

In other embodiments of the plug, the rear end of the three-curved groove on the ferrule can also be a sealing structure. In this case, it is only necessary to install the staple after assembly.

An embodiment of the electrical connector assembly, as shown in FIG. 11 , the electrical connector assembly includes a plug and a socket.

The plug uses the front end as the insertion end, and its structure is the same as that of the embodiment of the above-mentioned plug, so it will not be repeated here.

The socket also uses the front end as the plug-in end, which includes a socket housing. The socket housing is provided with external threads corresponding to the connecting nut of the plug. In addition, the socket housing is also provided with a seal for the sealing section of the plug housing Peripheral sealing ring for sealing fit on the outer peripheral surface.

Claims (9)

1. Plug, the plug uses the front end as the plug-in end, and the plug includes a plug housing and a connecting nut. The three-curved groove of the sleeve wall, the front end of the ferrule has a pressure-bearing part for pressing with the adapter socket, and the corrugated spring is installed on the top between the rear end and the plug housing, and the inner wall surface of the connecting nut is one front and one back There is an avoidance groove and a keyway, the avoidance groove is an annular groove coaxial with the plug housing, the convex key on the ferrule is located in the avoidance groove, the keyway corresponds to the convex key on the ferrule and its front end extends to the avoidance groove, the outer peripheral surface of the plug housing is provided with a staple corresponding to the three-curved groove on the ferrule, and the staple is located at the rear end of the three-curved groove and cooperates with the front and rear limit of the connecting nut. 2 . The plug according to claim 1 , wherein the rear end of the three-curved groove is an opening structure, and the staple is located in the opening structure of the corresponding three-curved groove. 3 . 3. The plug according to claim 2, wherein a gasket is provided at the rear end of the ferrule on the plug housing, and the gasket seals the opening at the rear end of the three-curved groove. 4. The plug according to any one of claims 1-3, characterized in that, the staples extend into the avoidance grooves of the connecting nut and cooperate with the connecting nut in a front and rear limit. 5. The electrical connector assembly includes a plug and a socket, the plug includes a plug housing and a connecting nut, the socket includes a socket housing, and the socket housing is provided with an external thread corresponding to the connecting nut, it is characterized in that the plug housing There is also a ferrule sleeve on the ferrule, which is provided with a convex key and a three-curved groove penetrating through the wall of the ferrule. Equipped with a corrugated spring, the inner wall of the connecting nut is provided with avoidance grooves and keyways one after the other. The avoidance grooves are ring grooves coaxial with the plug housing, and the convex keys on the ferrule are located in the avoidance grooves. , the keyway corresponds to the convex key on the ferrule and its front end extends to the avoidance groove. The outer peripheral surface of the plug housing is provided with a staple corresponding to the three-curved groove on the ferrule, and the staple is located at the rear end of the three-curve groove And cooperate with the front and rear limit of the connecting nut. 6 . The electrical connector assembly according to claim 5 , wherein the rear end of the three-curved groove is an opening structure, and the staple is located in the opening structure of the corresponding three-curved groove. 7. The electrical connector assembly according to claim 6, wherein a gasket is provided at the rear end of the ferrule on the plug housing, and the gasket seals the opening at the rear end of the three-curved groove. 8. The electrical connector assembly according to claim 5, wherein the front end of the plug housing has a sealing section, and the socket housing is provided with a peripheral sealing ring for sealing engagement with the outer peripheral surface of the sealing section . 9. The electrical connector assembly according to any one of claims 5-8, characterized in that, the staples extend into the avoidance grooves of the connecting nuts to limitly cooperate with the connecting nuts front and rear.